what could cause the serpentine belt to squeal

2005 HYUNDAI TUCSON
81,000 MILES
Avatar
BDOCKUS
  • MEMBER
  • 1 POST
I have changed both the tensioner and the idler pulley and have installed a new battery. yet the squeal is still there if the car runs for about 30 minutes or so the noise fades and is no longer there after an hour of run time. But after a cold start it is noisy as h*ll.
Nov 3, 2011 at 2:15 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
make sure there isn't a glaze building on the belt from dirty pullys. Also, make sure there isn't coolant or oil getting on the belt. Since you replaced the tensioniers, they SHOULD be fine. If they are and nothing is getting on the belt, chances are one of the belt driven components is locking or going bad.
Nov 3, 2011 at 2:20 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.